Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures
Additive manufacturing (AM) oriented joint topology optimization (TO) is a novel integrated computer-aided structural design and construction paradigm for spatial structures. This research proposed a complete computer-aided workflow for the TO design, numerical analysis and AM of steel joints in gri...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/172289 |
| _version_ | 1824456353955971072 |
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| author | Zuo, Wenkang Chen, Man-Tai Chen, Yangyu Zhao, Ou Cheng, Bin Zhao, Jincheng |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zuo, Wenkang Chen, Man-Tai Chen, Yangyu Zhao, Ou Cheng, Bin Zhao, Jincheng |
| author_sort | Zuo, Wenkang |
| collection | NTU |
| description | Additive manufacturing (AM) oriented joint topology optimization (TO) is a novel integrated computer-aided structural design and construction paradigm for spatial structures. This research proposed a complete computer-aided workflow for the TO design, numerical analysis and AM of steel joints in gridshell structures. A fully parametric TO design method for joints in gridshell structures was established based on the Grasshopper platform. The joints were automatically generated based on subdivision surface technology and then optimized using the bi-directional evolutionary structural optimization (BESO) algorithm. The structural performance of the optimized joints in terms of compliance, maximum displacement and maximum stress was studied through finite element analysis. The influences of various design parameters, including the loading condition, target volume and filter radius, on the structural performance of the optimized joints were investigated. The target volume was confirmed to have significant effect on the joint structural behaviour while the filter radius was found to affect the branch features of optimized joint. A practical design example of steel joints in single-layer cylindrical gridshell structure was presented to demonstrate the feasibility and validity of the proposed workflow. A typical optimized joint made of 316L stainless steel was additively manufactured using selective laser melting. |
| first_indexed | 2025-02-19T03:52:46Z |
| format | Journal Article |
| id | ntu-10356/172289 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:52:46Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1722892023-12-05T04:15:29Z Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures Zuo, Wenkang Chen, Man-Tai Chen, Yangyu Zhao, Ou Cheng, Bin Zhao, Jincheng School of Civil and Environmental Engineering Engineering::Civil engineering Topology Optimization Additive Manufacturing Additive manufacturing (AM) oriented joint topology optimization (TO) is a novel integrated computer-aided structural design and construction paradigm for spatial structures. This research proposed a complete computer-aided workflow for the TO design, numerical analysis and AM of steel joints in gridshell structures. A fully parametric TO design method for joints in gridshell structures was established based on the Grasshopper platform. The joints were automatically generated based on subdivision surface technology and then optimized using the bi-directional evolutionary structural optimization (BESO) algorithm. The structural performance of the optimized joints in terms of compliance, maximum displacement and maximum stress was studied through finite element analysis. The influences of various design parameters, including the loading condition, target volume and filter radius, on the structural performance of the optimized joints were investigated. The target volume was confirmed to have significant effect on the joint structural behaviour while the filter radius was found to affect the branch features of optimized joint. A practical design example of steel joints in single-layer cylindrical gridshell structure was presented to demonstrate the feasibility and validity of the proposed workflow. A typical optimized joint made of 316L stainless steel was additively manufactured using selective laser melting. The authors would like to thank the support from the National Natural Science Foundation of China (No. 52108157), the Natural Science Foundation of Shanghai, China (No. 21ZR1429000) and Science and Technology Commission of Shanghai Municipality (No. 21DZ1204600). 2023-12-05T04:15:29Z 2023-12-05T04:15:29Z 2023 Journal Article Zuo, W., Chen, M., Chen, Y., Zhao, O., Cheng, B. & Zhao, J. (2023). Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures. Thin-Walled Structures, 188, 110817-. https://dx.doi.org/10.1016/j.tws.2023.110817 0263-8231 https://hdl.handle.net/10356/172289 10.1016/j.tws.2023.110817 2-s2.0-85160512178 188 110817 en Thin-Walled Structures © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Topology Optimization Additive Manufacturing Zuo, Wenkang Chen, Man-Tai Chen, Yangyu Zhao, Ou Cheng, Bin Zhao, Jincheng Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title | Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title_full | Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title_fullStr | Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title_full_unstemmed | Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title_short | Additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| title_sort | additive manufacturing oriented parametric topology optimization design and numerical analysis of steel joints in gridshell structures |
| topic | Engineering::Civil engineering Topology Optimization Additive Manufacturing |
| url | https://hdl.handle.net/10356/172289 |
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